Oil burner



April 7, 1925. 1,532,582

J. H. `GRADI-:N ET AL oIL BURNER Filed oct. 27', 1922 Patented Apr. 7,1925.

Jai/ins fr, GRADEN Aun z'AcK Gniinnv, or ELLEN/woon, esonera.

l011, BURNER Application area october a?, i922. sensi No.' 5er/,aaa

T ZZ whom it "may concern:

Be it known that wie, JAM-ns H. GRADEN and ZACK E; Gir-Anniv, citizensof the United States, residing at Ellenwood, county .of Claytoin-andState of Georgia, have invented new and useful Improvements iny OilBurners, of which the following is a 'specie l'ication. a

This invention is directed to improvements in oil burners andpa'rticularly-` to means for preheating the oil to facilitate thevaporization of the latter intoy gas, for heating' or cooking purpdses;

in important object of to provide a vapor-generating device embodying afour-way ci cuit disposed in the flame zone of the burner and.discharging into the fuel chamber, the oil; being supplied to theburner through the four-way circuit and thusl vapor-ized into' gaswithout smoke.y odor, or formation of carbon.

A further object of the invention is to provide vapor-generating` meansof the above described character which-can loe-readily apl plied to theburner as an attachment thereto and as readily removed, when desired,for purposes of cleaning, repairs, or replacement.

With these and other objects in view,V

which will become apparent as the descrip; tion proceeds, the inventionresidesv in the construction, combination and arrangement of parts,hereinafter more fully described and claimed, and illustrated in theaccompanying drawings, in which like characters of references indicatelike parts throughout the several figures, of which:

Figure 1 is a top plan vview of an oil burner with the invention appliedthereto;

Figure 2 is a view of the burnerin side elevation, with a portion brokenaway to disclose the fuel chamber and air inlet;

Figure 3 is a plan view of the invention as det-ached from the burnerand including inlet and cleaning plugs and nozzle; and

Figure 4lis a view in detail of the needle valve assembly.

Figure 5 is a detail elevation of the needle valve.

As shown in the drawing the burner is of hollow form embodying a fuelchamber 11 into which air is admitted through the bottom opening 12, thefuel escaping from the back end of the chamber into the distributingchambers 13 and 14 extending longitudinally of the burner on oppositethe invention isv rectangular casing'` 17, tothe front side of which isconnected a V-shaped vapor gener'-v at-ing tube 18, the side members 19and 20 of which penetrate the casing 1.7 at the places shown. At theback or. outer side',` the casing is provided with a screw-plug 21 hav-Ying threaded engagement in a clean-out open-- ing 22 in linewith tube19, and anVV inlet kplug. 23 registeringwth the inner' end of tube 2O.`A second clean-out opening andv plug` may alsobe arranged in one end ofthe casing as shown at 24,' thus enabling the parts to be very` easilycleaned.` Extending from the front. of casing 1=7 and centered with.resgectA toA the tubes 19 and 2O of the V-shaped member, is a straighttube 25 which constitutes the outlet of casing 17. This outlet tube 25penetrates the front end of fuel chamber 11 and is provided, at itspenetrating end with a nozzle 26 which is detachable, the same havingthreaded engagement with the end of the tube as illustrated. Thenkerosene or other oil is supplied to the burner by way of inlet plug 23,it passes through the four-way circuit provided by tubes 19 and 20,casing 17 and outlet 25, and since these tubes overlie the fiameorifices of the burner, being thus well within the flame zone of thelatter, it will be seen that the oil will'be tl'ioroughly preheated and,hence, supplied to the fuel chamber in such a state as to readilyvaporize. The diverting of the oil through a four-way circuit within theflame zone of the burner, subjects the oil to the heat vof the burner ina safe and efficient Vmanner and insures its initial preheating prior toits passage to the fuel chamber.

The fuel supply to the chamber 11 is controlled by a long needle valve27 which eX-.

tends through avalve guide at the back of casing 17 and through thevapor-generating tube 25, terminating in a tapered point 28 whichengages the valve seat 29 in the nozzle 26. The needle valve has anoperating handle 30 at its outer end and is threaded inwardly of thehandle, as at 31, for engagement with the threads 32 of the packing nut33 el' the valve guide. Nut 33 is threadedly engaged with oneV end ofYVthe guide tube 3ft which has its other end screwed into the back ot'casing 17. Tube 34 engages in a bracket 35 at the front end of theburner and supports the iouravay circuit member in position, beingitselr" held in place by a set screw 36.

By loosening the set screw and unscrewing` tube Sil from the casing 17,the four-way member may be readily removed from the burner, and byfurther separating the parts as shown in Figures and il, they may beeasily cleaned. The device is likewise adapted to be readily andconveniently replaced, when desired, and in the practical application ofthe invention may be installed as a built-in or permanent part or' theburner or as an attachment to be applied thereto as above described.

In practice, we have found that the form et our invention illust 'atedin the accompanying drawings and referred to in the above description,as the preferred embodiment, is the most eliicient and practical; yetrealizing the conditions concurrent with the adoption ot our device willnecessarily vary, we desire to emphasize that various minor changes indetails of construction, prop-on tion and arrangement of parts, may beresorted to within the scope of the appended claims without departingfrom or sacrilicing any of the principles of this invention.

Having thus described our invention, and without enumerating variationsand equivalents, what ave desire protected by Letters Patent is as setYforth in the following claims: i

l. An oil burner having a uel chamber and means for supplying fuel tothe said chamber, said means comprising a hollow casing, a V-shaped tubehaving` its ends in communication with the casing, fuel inlet means atone end of the V-shaped tube, an outlet tube extending from the casingand having its outer end penetrating the said fuel chamber, and valvemeans associated with the said casing and the said outlet tube thereof.

2. An attachment of the character specilied comprising a four-Waycircuit member embodying` a V-shaped unit presenting inlet and outlettubes, a vapor generating tube having a nozzle at its outer end, aconnecting casing between the inner end of the vapor generating tube andthe outlet tube of the V-shaped unit, a tubular valve guide connectedwiththe said casing in line with the said vapor-generating tube, and aneedle valve extending longitudinally of the said guide and generatingtube and engaging a valve seat in the nozzle of the latter.

JAMES H. GRADEN. ZACK GRADEN. Witnesses:

J. H. TREADWELL, J. L. GRoUT.

